Certificate for #16009 ⟨a, b | aaa=ab, abbb=aa

Completion settings:

[1] ab=aaa

Axiom: aaa=ab.

Flip LHS and RHS.

Defines rule #2.

Referenced by [2].

[2] aaaaaaa=aa

Axiom: abbb=aa.

Reduce LHS:

[1](ab)bb
[1]aa(ab)b
[1]aaaa(ab)
aaaaaaa

Defines rule #1.